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Asthma 2

... eyes." (Encarta 1997) Asthma in adults is less likely to be caused by allergies. Non-allergic asthma is called intrinsic asthma. The frequency and the extreme in which asthma symptoms occur vary from one person to another. Most attacks occur at night, beginning with coughing or wheezing and shortness of breath, but in some people a dry cough may be the only symptom. This may be partially due to the fact that you stay in your room sleeping for eight hours at a time. Dust mites collect in your bedding, curtains, pillows and rugs. To a ...

Number of words: 876 | Number of pages: 4

Bacillus Anthracis

... Anthrax by injecting it into animals. was the first bacterium shown to be the cause of a disease. is a very large, gram positive sporeforming rod. The organism is cultivated on ordinary nutrient medium and grows best aerobically, but can also multiply under anaerobic conditions. The disease, Anthrax, is very deadly but it is rare. The risk of infection is 1/100,000. The disease is acquired when spores from a contaminated animal carcass inoculate an open wound. Then, the spores germinate and invade the blood stream, leading to death withi ...

Number of words: 296 | Number of pages: 2

Nuclear Fusion

... orange Afros. The sun is a example of thermonuclear fusion in nature. If I was a atom, I could only wish to be in a thermonuclear reaction. Thermonuclear reactions occur when a proton is accelerated and collides with another proton and then the two protons fuse, forming a deuterium nucleus which has a proton, neutrino and lots of energy. I have no idea what a deuterium nucleus is, but is must be 10 times cooler than just a regular nucleus. Such a reaction is not self sustaining because the released energy is not readily imparted to o ...

Number of words: 2376 | Number of pages: 9

A Study Of Inheritable Traits In Fruit Flies

... using fruit flies is that they mature rather quickly and don’t require very much space. Drosophila melanogaster has a life cycle of four specific stages. The first stage is the egg, which is about . 5mm long. In the 24 hours when the fly is in the egg stage, numerous cleavage nuclei form. Next, the egg hatches to reveal the larva. During this stage, growth and molting occur. Once growth is complete, the Drosophila enter the pupal stage, where it develops into an adult through metamorphosis. Upon reaching adulthood, the flies are rea ...

Number of words: 1423 | Number of pages: 6

Water Pollution: Is It As Big Of A Problem As We Think?

... All different types of water pollution are contributing factors in this problem. Here are some things that are associated with pollution: Pathogens: Pathogens are disease causing bacteria, viruses, and protozoa. They usually come from human sewage. As pathogen numbers increase, so does the risk of human health. Biochemical Oxygen Demand: Organic wastes that decay in a body of water. decrease the amount of oxygen found in it. The living things in the lake need oxygen to survive. If the oxygen level is depressed to zero, all fish in the ...

Number of words: 2445 | Number of pages: 9

Fission Or Fusion

... of nuclear fissions, or a chain reaction, which results in continuous release of nuclear energy. Naturally occurring uranium contains only 0.71 percent uranium-235; the remainder is the non-fissile isotope uranium-238. A mass of natural uranium by itself, no matter how large, cannot sustain a chain reaction because only the uranium-235 is easily fissionable. The probability that a fission neutron with an initial energy of about 1 MeV will induce fission is rather low, but can be increased by a factor of hundreds when the neutron is slowed down ...

Number of words: 1273 | Number of pages: 5

The Polar Bear

... a meat-eater has molded into an incredible mammal with many special features. MOVEMENT Since polar bears are carnivores and there isn’t a lot of food in the Arctic, they must be able to travel a great distance at a good speed. Looking at a polar bear you will probably notice that it is bowlegged. This means that their huge paws point inward. Having their paws in this position helps them grip the slippery ice. Another specialized feature of its paws is that they have pads of dense fur on the bottoms. Polar bears are the only bears ...

Number of words: 1548 | Number of pages: 6

Triceratops Hottidus: “Horrible Three-horned Face”

... about 30 feet long, 10 feet tall, and weed about 6- 12 tons. It had a short, pointed tail, a bulky body, column-like legs with hoof-like claws, and a bony neck frill rimmed with bony bumps. It had a parrot-like beak, many cheek teeth, and powerful jaws. WHEN TRICERATOPS LIVED: Triceratops lived in the late Cretaceous period, about 72 to 65 million years ago, toward the end of the Mesozoic, The Age of Reptiles . It was among the last of the dinosaur species evolve before the Cretaceous- Tertiary extinction 65 million years ago. BEHAVIOR: ...

Number of words: 436 | Number of pages: 2

Big Brother, Little Sister Computer Monitoring

... Monitoring increases there comes a concern for the types of effects it may have in the workplace. According to DeTienne, "By the end of the decade, as many as 30 million people may constantly be monitored in their jobs" (462). As computer systems become more sophisticated this number will drastically increase. As we enter this new age of technology we must remember that with more power comes more responsibility by employers and employees alike. Micheal J. Smith, a professor at the University of Wisconsin-Madison explains that knowledge ...

Number of words: 721 | Number of pages: 3

Clinical Depression 2

... According to the numbers of reported cases of depression, 25% of women and 10% of men will have one or more episodes of clinical depression during their lifetimes. The biologic basis of Clinical Depression originates in the brain. Your brain is made up of a complex network of nerve cells, called neurons and of brain chemicals, called neurotransmitters. Neurotransmitters transmit messages from one neuron to another. Two of these neurotransmitters are not produced in sufficient quantities in a depressed person’s brain. Because of this l ...

Number of words: 599 | Number of pages: 3

Tomatoes

... and disseminated it throughout Europe and Asia sometime during the 16th century. The tomato is now cultivated world-wide in a variety of environments. The common tomato, Lycopersicon esculentum Mill., belongs to an extremely diverse and large family the Solanaceae. Often refered to as the Nightshade family, this family contains many of our commonly cultivated plants (potato, peppers, eggplant, tobacco, petunias, tomatillo) and various weeds (nightshades, jimson weed). It may have been this association with the nightshades which originall ...

Number of words: 500 | Number of pages: 2

Antibiotic Resistance 2

... by every known antibiotic are on their way. S. aureus, a major cause of hospital-acquired infections, has thus moved one step closer to becoming an unstoppable killer. The looming threat of incurable S. aureus is just the latest twist in an international public health nightmare: increasing bacterial resistance to many antibiotics that once cured bacterial diseases readily. Ever since antibiotics became widely available in the 1940s, they have been hailed as miracle drugs -- magic bullets able to eliminate bacteria without doing much har ...

Number of words: 3982 | Number of pages: 15

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